create-dmg - Quickly Create Professional DMG Files for macOS Applications

create-dmg is a lightweight and efficient command-line tool designed specifically for macOS developers, enabling you to generate professional-looking disk image (DMG) files for application distribution in just seconds. After completing development and exporting your macOS app from Xcode, you typically package it into a .dmg file for distribution. Compared to complex GUI tools or custom-written scripts, create-dmg automates this process effortlessly.

🚀 Key Features

One-Click Professional DMG Generation

• Out-of-the-box usability: No complex configuration or design skills required—the tool automatically creates DMGs with a polished, professional appearance.
• Pre-designed templates: Includes carefully crafted visual elements to ensure high standards in both user experience and visual presentation.

Intelligent Automation

• Code signing: Automatically attempts to code-sign the DMG to verify software authenticity (can be skipped manually).
• Version management: Automatically embeds the application version number in the DMG filename (optional to exclude).
• Standardized naming: Follows conventions like App Name Version.dmg.

Developer-Friendly

• Command-line interface: Fully controllable via CLI, making it easy to integrate into CI/CD pipelines.
• Lightweight and simple: Built with Node.js, easy to install and runs efficiently.
• Flexible options: Offers numerous customizable parameters to meet diverse development needs.

✨ Core Advantages

1. Time and Effort Savings

• Developers no longer need to spend time learning how to create visually appealing DMGs or purchase expensive GUI tools.
• Automation allows you to focus on development, not packaging and distribution.

2. Professional Visual Quality

• Generated DMGs meet modern macOS application visual standards.
• Automatically includes essential visual elements to ensure users have a positive first impression when opening the app.

3. Easy Integration

• Seamlessly integrates into existing build processes and CI environments.
• Compatible with modern toolchains like Git and npm.

4. High Reliability

• DMG creation proceeds even if code signing fails, preventing build pipeline interruptions.
• Provides dedicated options for CI environments to avoid build failures due to signing issues.

5. Open Source & Free

• Licensed under MIT, completely free to use for individuals and enterprise teams.
• Actively maintained by a dedicated developer community with ongoing improvements and updates.

🛠️ Technical Specifications

• Minimum System Requirement: macOS 10.13 or later
• Runtime Environment: Node.js 18 or higher
• Output Format: Standard macOS DMG disk image
• Code Signing: Supports both automatic and manual code signing configuration

🔧 Simple to Use

Install create-dmg in one step:

npm install --global create-dmg

Basic usage:

$ create-dmg 'YourApp.app'

create-dmg is ideal for macOS developers who want to maintain a professional standard in application distribution without investing excessive time or resources. Whether you're an independent developer or part of a team, it significantly simplifies the final step of app distribution, allowing you to focus on more important features and innovations.

Important Note: Ensure your code signing certificate is properly configured so users can install your app smoothly. In CI environments, use the --no-code-sign flag to skip signing and prevent build failures.